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Keywords:

  • Epitaxial growth;
  • Surface modification;
  • Thin films;
  • Zinc oxide
Thumbnail image of graphical abstract

An epitaxially grown NaxCoO2 film can be peeled off from its α-Al2O3 substrate by dissolving the interfacial layer between the film and the substrate in water, as shown in the figure. The freestanding film thus formed can be pasted on an amorphous glass substrate and used for growing an epitaxial ZnO film. This method can be used to impart atomic regularity to amorphous glass, polymer, and metal surfaces.